I've got a number of external drives, each at varying speeds and storage limits and am curious as to whether I can create a RAID setup if I were able to pull each drive out of it's enclosure? If possible this would be a great way to add speed, convenience, and save some desk space. Is this possible? If not, any ideas as to where I might find a good "Intro to RAID" guide to get started in the right direction? Thanks!